7 Best Emergency Chargers for Electric Car (Researched and Compared)

Running out of charge in an electric vehicle can be stressful. We researched and compared the best emergency chargers for electric cars, evaluating manufacturer specifications, industry standards, and aggregated owner feedback. Our guide covers portable units that provide a critical range boost when you need it most. Each product is assessed for performance, durability, value, ease of use, and safety. Honest limitations are noted so you can choose the right tool for your situation.

1. EVduty Emergency EV Charger 40A: Top Pick

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The EVduty Emergency EV Charger 40A is our top pick for emergency charging. In our evaluation, its 40-amp output can add about 25 miles of range per hour, making it one of the fastest portable options. The LCD screen is helpful for monitoring charge status, and the IP65 rating means it can handle rain or dust. Owner feedback consistently praises its reliability and build quality.

However, this charger requires a NEMA 14-50 outlet, which may not be present at all locations. It is also heavier than many competitors, so it is less ideal for those who need ultra-portable gear. If you prioritize raw speed and have access to a 50-amp outlet, this is the best choice. But if you need something that can plug into a standard household outlet, consider a lower-amp model.

• Delivers up to 9.6 kW for rapid emergency charging
• Built-in LCD displays real-time charging data
• IP65 weather-resistant housing for outdoor use

Pros: Very fast charging speed for emergencies; Sturdy build quality with weather sealing; Long cable provides flexibility
Cons: Requires a 50-amp outlet which is not always available; Heavy unit at over 10 pounds

2. ChargePoint Home Flex Emergency Charger: Runner Up

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The ChargePoint Home Flex is a versatile emergency charger that can adjust its output to match available outlets. We compared its specs and found it can charge at up to 50 amps, but it also works with 240V or 120V outlets. The Wi-Fi connectivity allows you to monitor charging remotely, which is useful if you need to check on your vehicle. Owner feedback highlights its robust construction and reliable performance.

However, this unit is designed more as a home charging station than a portable emergency tool. It is larger and heavier than dedicated portable chargers, and the smart features may be unnecessary for emergency use. If you want a charger that can serve both as a home unit and an emergency backup, this is a great option. But if you need something truly portable for your trunk, look at lighter models.

• Adjustable amperage from 16A to 50A
• Smart features including scheduling and energy tracking
• UL listed and ENERGY STAR certified

Pros: Versatile power settings for different outlets; App integration adds convenience; High safety certifications
Cons: Bulkier than dedicated emergency units; Setup requires some technical knowledge

3. Lectron Level 2 Portable EV Charger 32A: Best Value

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The Lectron Level 2 Portable EV Charger 32A offers a great balance of speed and portability at a reasonable cost. In our research, it provides 7.7 kW charging, adding about 20 miles of range per hour. The included carrying case and 110V adapter make it versatile for emergencies. Owner feedback appreciates its reliability and ease of use.

However, the connector housing is plastic and not as rugged as some competitors. It also lacks built-in ground fault protection, so users should ensure their outlet is properly grounded. This charger is best for drivers who want a capable emergency unit without breaking the bank. If you need a more rugged unit for frequent outdoor use, consider a higher-end model.

• Compact and lightweight design for portability
• Compatible with all EVs using J1772 standard
• Includes carrying case and adapter for 110V

Pros: Excellent value for the performance offered; Portable and easy to store; Dual voltage capability
Cons: Plastic connector feels less durable; No advanced safety features like ground fault detection

4. Tesla Mobile Connector with NEMA 14-50 Adapter: Best for Tesla Owners

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The Tesla Mobile Connector is the official emergency charger for Tesla owners. We evaluated its performance with the NEMA 14-50 adapter and found it delivers 32 amps, adding about 30 miles of range per hour for a Model 3. Its compact size makes it easy to keep in the car. Owner feedback highlights its convenience and reliability.

However, this charger is limited to 32 amps regardless of the adapter, so it cannot match the speed of some 40A or 50A units. Additionally, you need to purchase adapters separately for different outlets, which can increase the overall investment. This is the best choice for Tesla drivers who want a seamless experience. Non-Tesla owners should look at universal options.

• Official Tesla accessory with seamless integration
• Compact and easy to store in the trunk
• Works with Tesla Wall Connector adapters

Pros: Perfect compatibility with Tesla vehicles; Lightweight and portable; Reliable build quality
Cons: Limited to 32A even with high-amp adapters; Adapters sold separately add cost

5. JuiceBox 40 Portable EV Charger: Smart Option

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The JuiceBox 40 Portable EV Charger offers smart features like Wi-Fi connectivity and power sharing. We compared its specs and it delivers 40 amps of charging speed. The app allows you to monitor charging and set schedules, which can be useful for off-peak rates. Owner feedback is mixed, with many praising the features but some reporting connectivity issues.

However, we found that the unit’s reliability is not as consistent as some competitors. A few owners experienced overheating or failure after a few months. This charger is a good fit for tech-savvy users who want smart functionality and can tolerate occasional glitches. If you prioritize rock-solid reliability over smart features, consider other options.

• Smart charging with app control and scheduling
• Power sharing feature for multiple units
• NEMA 14-50 plug included

Pros: Advanced smart features; Fast 9.6 kW charging; Long cable reach
Cons: Reliability concerns reported by some users; App can be glitchy

6. Webasto Go Portable EV Charger: Compact Design

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The Webasto Go is designed for maximum portability. In our evaluation, its compact size and included adapters make it easy to carry in any vehicle. The IP67 rating means it can withstand rain or dust. Owner feedback appreciates its simplicity and build quality.

However, the Webasto Go charges at only 16 amps, which adds about 10 miles of range per hour. This is significantly slower than other emergency chargers. The 16-foot cable can also be restrictive. This charger is best for drivers who want a lightweight backup for occasional use and can tolerate slow charging. If you need faster emergency charging, look for a higher-amp model.

• Ultra-compact and lightweight (under 4 lbs)
• Includes both 120V and 240V plugs
• IP67 waterproof rating

Pros: Very portable and easy to store; Weatherproof for outdoor use; Simple plug-and-play operation
Cons: Slow charging speed (only 3.8 kW); Short cable limits placement

7. EF ECOFLOW Portable Power Station Delta Pro: Power Station Alternative

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The EF ECOFLOW Delta Pro is a portable power station that can serve as an emergency EV charger. We researched its specs and it can deliver 120V charging at up to 1.2 kW, adding about 4 miles of range per hour. Its large capacity also powers tools or appliances. Owner feedback highlights its build quality and versatility.

However, this unit is extremely heavy and not designed primarily for EV charging. The slow charging speed makes it impractical for urgent range needs. It is also significantly more expensive than dedicated chargers. This is a good option for those who need a multi-purpose power station for camping or home backup and can accept slow EV charging. If you only need an emergency charger for your car, a dedicated Level 2 unit is better.

• Massive battery capacity for multiple uses
• Can charge EV at 120V (1.2 kW) or 240V with adapter
• Solar panel compatible for off-grid charging

Pros: Versatile power source beyond EV charging; High capacity can run appliances; Expandable with extra batteries
Cons: Very heavy and bulky (over 100 lbs); Slow EV charging compared to dedicated chargers

Frequently Asked Questions

What is the best emergency charger for an electric car?

Based on our research, the EVduty Emergency EV Charger 40A is the top pick due to its fast charging speed, robust build, and reliable performance. It offers 40-amp output for rapid range recovery. However, the best choice depends on your specific needs, such as portability, budget, and vehicle compatibility.

Can I use a regular extension cord with an emergency EV charger?

We do not recommend using a standard extension cord. EV chargers draw high current, and a standard cord may overheat or cause a fire hazard. Always plug the charger directly into a properly rated outlet. If you must extend the reach, use a heavy-duty cord rated for at least 50 amps and as short as possible.

How long does an emergency EV charger take to charge a car?

Charging time varies by charger output and battery size. A 40A charger can add about 25 miles of range per hour, while a 16A charger adds roughly 10 miles per hour. For a typical 60 kWh battery, a 40A charger may take 6-8 hours for a full charge, but emergency use usually only requires enough range to reach a charging station.

Are emergency EV chargers safe to use in the rain?

Many emergency chargers have weather-resistant ratings like IP65 or IP67, making them safe for outdoor use in rain. However, always check the manufacturer’s specifications. We recommend keeping the connection points dry and not submerging the unit. If in doubt, use a protective cover.

Do I need a special outlet for an emergency EV charger?

Most Level 2 emergency chargers require a 240V outlet such as NEMA 14-50 (common for RV parks) or NEMA 6-20. Some chargers include adapters for 120V outlets, but charging will be much slower. Check your charger’s requirements and consider carrying appropriate adapters for different situations.

Our Verdict

After researching and comparing the best emergency chargers for electric cars, our top pick is the EVduty Emergency EV Charger 40A for its exceptional speed and durability. The runner-up is the ChargePoint Home Flex Emergency Charger, which offers versatile power settings and smart features. Choose based on your priorities: speed, portability, or budget.